/*
 * Copyright 2011 Kim Lindhardt Madsen
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package dk.lindhardt.gwt.geie.client.evaluate;

import java.io.Serializable;

/**
 * User: AnAmuser
 * Date: 25-08-11
 * <p/>
 * Double function taking 1 or 2 double arguments
 */
abstract class IDoubleDouble1And2Function extends IFunction implements IDouble1And2Function {

   public Double evaluate(Serializable arg1) throws IllegalArgumentException {
      if (arg1 instanceof Double) {
         return evaluateDouble((Double) arg1);
      }
      throw new IllegalArgumentException(getFunctionName().toUpperCase() + " only takes double arguments");
   }

   abstract Double evaluateDouble(double arg1);

   public Double evaluate(Serializable arg1, Serializable arg2) throws IllegalArgumentException {
      if (arg1 instanceof Double && arg2 instanceof Double) {
         return evaluateDouble((Double) arg1, (Double) arg2);
      }
      throw new IllegalArgumentException(getFunctionName().toUpperCase() + " only takes double arguments");
   }

   abstract Double evaluateDouble(double arg1, double arg2);
}
